Jul 23, 2010 - Although prior recommendations of major societies advised cervical cytology screening in adolescents based on onset of vaginal intercourse, the American College of Obstetricians and Gynecologists now recommends that screening begin at age 21, regardless of sexual activity, due to the rarity of cervical cancer in women under 21. These recommendations have been published in the August issue of Obstetrics & Gynecology.